Sparker for explosive-engines.



E. GANEDY.

SPARKER FOR EXPLOSIVE ENGINES.

APPLICATION FILED FEB. s, 1905.

Patented Jam 24, 1911.

Earl famed UNITED STATES PATENT onn on.

E ARL CANEDY, OF ,CHICAGO HEIGHTS, ILLINOIS.

SPARKER' FOR EXPLOSIVE-ENGINES.

Specification 0t Letters Patent.

Patented Jan. 24, 1911.

Application filed February 8, 1905. Serial No. 244,792:

To; all whm'n it may concern:

Be it known that I, EARL CANEDY, citizen of the United States, residing at Chicago Heights, .in the county of Cook and State of Illinois, have invented'certain new .Heretotore, sparking plugs which have been largely in use have been attached. to the cylinder of the explosive engine and have been so constructed that it was necessary to remove the entire plug including the on the plug. I

My invention is designed to overcome the iobjection of the necessity of the usev of a nipple from the cylinder when it was desired to clean the insulator. In such constructions; it was necessaryto employ a wrench and considerable power or force 'to effect the removal of the nipple from the cylinder. The usualconstruction is an uninterrupted threaded connection between the parts and thereby necessitating the repeated application of the wrench in unscrewing the coupling or connection. It is obvious that in automobile constructions these sparking plugs are in common with other devices so positioned as to economize in space as much as possible and so as not to interfere with other working parts. In suchpositions it has been found quite difficult to make the wrench application and it-frequentl occurs that any endeavor to remove the plugs, either the plugs or. their insulators are broken or adjacent parts are damaged by.

the wrench'slipping from the wrench hold 'wrench'and therepeated applicationof the wrench to the plug inthe act of removal or grima'ry application. enerally speaking, it may be stated that p the object of the invention to avoid the necessity of the use of a detached wrench or hand tool in-connection with "the spz'lrking plug and to provide'a sparking plug with an insulator which latter can be removed by 2 movement of less than a whole turning movement of the insulator carrying part.

A further object is the provision of aninsulator carrying part of the spark plug with an attached handle part and an interrupted coupling part, the coupling and uncoupling of which can be eitected by turning the insulator holding part less than a complete revolution.

. A still further object is the provision in a sparking plug of what I shall term a quick release coupling between the insulator carrier and the nipple par t of the plug, and in this connection to so construct the quick release coupling that the same may be applied for coupling purposes in two or more dilierent positions so that should the nipple be placed in the cylinderand one of the coupling positions arranged so as to bring it opposite or adjacent a fixed part of the engine, thereby interfering with the handle employed for holding the insulator during the cleaning or wiping processes.

In the accompanying drawing is shown a preferable embodiment of:- the invention, butit is to be understood that many changes and alterations may be made without departing fronrthe principle and nature of the invention.

Figure l is a longitudinal section of a sparking plug embodying ,the invention, showing a part of the cylinder; Fig. 2 is a perspective view oit' the sparker; Fig. 3 is a separated View of the insulator and carrying plug; Fig. 4k is a section through the outer end of the carrying plug; and Fig. 5 1s a similar View through the lug part of the;

sleeve.

'In the drawing A. designates a section of cylinder of any well known form; B designates thenipple part of the sparking plu This nipple has the usual threaded end entering the threaded bore or hole in the cylinder wall. The nipple is also formed with a hollow center, the outer portion of which is somewhat enlarged to form a chamber having a shoulder 7) while the extreme outer end is provided internally with two oppositely arranged inclined grooves I) from which extend outwardly toward the end the vcylinder and the insulator G is p in with the carrier E which is then placed in l ln'cecli hloclr or interrupted ction or couplin the insulator or any desired ing the electrode D in?! cenigitudinal bore thereof. The inner the electrode is provided with. :1 mg pointd arranged axially at'the center and projecting out longitudinally as shown in Fi l. edectrode D ms a thumb nut d by which the'conductor E is secured to the electrode. The insulator G has the shouldered part- C ofs-the of a diameter to it the outer part bore of the nipple.

Surrounding the insulator is a carrier F in the the insulator G and serve as a holder therefor when the insulator is removed. The carrier F has formed on opposite sides lugs f constituting the en aging members of the aforesaid breech blocs of interrupted threaded coupling of the nipple. These projections are substantially. dove-tailed in formation and slightly inclined, their size being such as to permit their insertion into and from the entering grooves and to pass into the inclined gfooves b when turned. Secured to the holder 5 is a. handle F. lhis is shownconveniently es a permanent part ot the holder, and in that connection serves as a means for holding the insulator when the OYC'Ll from the nipple.

To prmide a protected sparking point for 'i'ound connection I conveniently extend G across the center of the inner end nipple B as shown in Fig-1. This locate vholly within the end of the angenient is advantageous in A -3 wire is in. a position to prevent the nipple placed inposition and also it presents a. terminal which is in alinement with the point (i irrespective of the position of the point (Z in the nipple.

in practice the nipple B is inserted in the The opposite end of the f form of a sleeve fashioned to closely fit ectly over the soarkin mint then forced extending lugs I of. an electrode carried position, the projection of the carrier entermg the grooves in the parts are locked securely together, the inner end of the carrier abutting the en-' larged part G of the insulator. The reverse movement will readily uncouple the parts.

It has been found convenient to form an opening in the end of the handle F, lining said opening with a bushing H of'insulating material sotha passed therethrough, the handle S rving as a support.

The primary advantage of this construc-' tion is thatfo the quick removal of the in-. sulator for cleaning purposes or for inserting a new insulator should the one in use become broken. the use of adetziched wrench is avoided. l I desire it understood that the breechblock connection shown is susceptible of various modifications without departing in the least from the principle of the invention. Having thus described the invention what is claimed as new and by Letters Patent is z In aspark plug, for explosive engines, the combination with the cylinder part of an enthe nipple and by turning the carrier about one quarter of a revolution 't' the conductor E canlbe' desired to be secured A-further advantage is that e gine, of a nipple threaded into the cylinder and constituting h fixed connectiontherewith, the outer part of the nipple having an enlarged central-bore formed with inclined inwardly projecting holding purts spaced apart at opposite ends. a carrier having an internal bore andcarrying an insulator projecting in opposite directions beyond the carrier and having at different points outwardlyor projections adapted to beyond [the projecting parts? the inner sides there- I by the insulator, and a handle part for the carrier.. i

-In testimony whereof I affix my signaturein presence of two witnesses.

\ EARL GANEDY.

enter the space of the nipple to engage \Vitness'es:

CRAIG A. Hoon,

LYLE D. PERR-IGO. 

